Flowmaster on Ecoboost?
#1
Flowmaster on Ecoboost?
I've heard some series 10 and series 40 Flowmaster mufflers on the ecoboost with resonator delete and factory piping and they sound not bad to me. Just wondering if a chambered muffler causes to much back pressure and will hurt performance? A performance increase would be great but as long as there is no loss I'm happy.